Torpedo-guard.



l. F. NEWSOFV'.

TORFEDO GUARD.

APPucATmN FILED luLY 5,1911.

1,293,169. mama Feb. 4,1919.

3 SHEETS-SHEET l.

H52 i f7@ I /7 \VITNESS S: INVENTOR fas mums mnu ca. Puomumo.. uusnmmmv.n c.

1. F. NEWSOIVI.

ToRPEDo GUARD. APPLICATION FILED JULY 5. 19H-V .Patented Feb. 4, 1919.

3 SHEETS-SHEET 2 y my uw i om A m, w 7/ l 8,\\\\ \\\\\\\\\./N 9

2: N l fw WITNESSES:

l. F. NEWSOM.

TORPEDO GUARD.

APPLlcATloN FILED 1uLY5. |917.

Patented F@b.4,1919.

WITNESS 7L.; MM

A'r'rulcs HYS me amm russa ca. moraumo.. wnsnmamn, u. c

JOHN'F. NEWSOM, 0F FRANCISCO, CALIFORNIA.

TDRPEDO-GUARD.

Specication of Letters Patent.

Patented Feb. 4, 1919.

`Application led July 5, 1917. Serial No. 178,638.

To all whom t may concern:

Be it known that I, JOHN F. NnwsoM, a citizen of the United States,residing at the city and county'of San Francisco and State ofCalifornia, have invented new and useful Improvements in Torpedo-Guards,`of which the following is a specification.

Y This invention relates to' a torpedo guard for vessels that ispositioned-a suitable distance from the hull of a vessel when it is inthe danger zone, and that is nested adjacent the hull ofthe vessel whenit is outside of the danger zone.

The invention consists of the parts and the construction and combinationof parts as hereinafter more fully described and claimed, havingreference to the accompanying` drawings, in which igure 1 is an endelevation in section of one side of a vessel showing the application ofthe invention.

Fig. 2 is a similar view showing the guard nested against the side ofthevessel.l

Fig.Y 3 is a cross sectionon line 3-3 o'f Fi 1.

ig. 4 is a plan view partly 4in section of the inner pivotallymountedend of the arm.

Fig. 5 is a plan section of one side of the vessel showing Vthe guardsin nested position.

Fig. 6 is an end view similar to Fig. l showing a modification of thestructure employed.

Fig. 7 isa View similar to Fig. 2 showing the guard in nested position.

Fig. 8 is a'detail sectional view of the inner end of the arm showingthe worm gear drive.

Referringto the drawings in detail A indicates in general, the deck kofa vessel, and 2 one of the sides. Pivotally secured, as at 3, in ahearing bracket 4 permanentlysecured to the side of the vessel is aboomor arm 5. There are a suitable number of arms 5 arranged along'eachside of the vessel and the arms are arranged in pairs, eachV pair beingp shaft nentlv secured alongl the bilge line Fig. 9 is asideelevationofthe traveling head.

arranged to support or carry a guard member generally indicated at B.Referring to Fig. 4, itwill be seen that each arm is carried in bearingbushings 6, and that extending through each pair of bearing bushings isa shaft 7 upon which is secured a worm gear 8. By referring to the samefigure, and also to Fig. 3, it will be seen that each arm is hollow andapproximately rectangular in cross-section to form a guide Vfor atraveling head 9. Journaled in each arm and extending through eachtraveling head is a screw- 10 on the inner end of which is secured aworm wheel 11. This worm wheel remains in constant mesh with the wormgear 3, and when turned by same serves as a means for moving thetraveling head in and out on the guides formed in the arm, as willhereinafter be describe i Arranged on one side of each bearing bracket 4shaft 12, 'which extends up tothe deck of the vessel. This shaft may beprovided 4with a hand-wheel or may be turned by any other suitablemeans.

Secured on the lower end of said shaft is bevel gear 13, andinter-meshing with said gear is a second bevel gear 14 which is securedon the outer end of shaft 7 theshaft 12 and the Vgears 13-14 serving asmeans for turning the screw-shaft 10. Permaof the vessel is atrough-shaped supporting shelf 15, which is adapted to support theguards when they are nested against the sideV of the vessel, as shown inFigs. 2 and '5, and connected withv the lower end of each guard for thepurpose'of swinging it inwardly into the trough is a cable 16. 4Thereare a pair of I these cables one bein secured to each end of the guardas shown at 17. Each cable passes from the point of attachment shown.'over a shive 18 and passes from this point up to a winding drum, orother tackle, carried on deck. The cable 16 assumes the dotted lineposition shown, at 16a when the guards are to be 'swung inwardly, butunder normal conditions assumes thefull line posiand journaled inbearings is a tion shown at 16 when the guards are hanging in guardingposition. This is accompllshed by securing a pair of shives 19 and 20 toeach arm 5. A cable 21 operated from the deck of the vessel, andcarrying the floating block 22 permits the cable 16 to be pulled up4into alinement with the arms 5. This is accomplished by passing thecable 21 through the floating block 22, and then over the shives 20 and19. The end of the cable 21 carries a loop 23 through which -the ca ble16 passes, and then through a loop n2li carried by the floating block.It is therefore possible to raise the cable 1G or lower the same bymeans of the cable 221.

Each guard employed consists of a hollow caisson which is pivotacllysupported as at 251 between a pair of traveling heads 9. The caissonsmay'beuconstructed of stoel or other suitable material, and the -niiainplates forming same are spaced apart a suflicient distance to form a.comparatively large chamber; Each caisson may therefore be provided withloading openings 25, or man:-v

holes, at the top, winch are water tight and the chambers formed 1ny theguards can in this manner be loaded with grain, or other freight.

Secured tothe outer end of each arm 5 is a cable '26. Each cable passesupwardly to the winding drum of a winch '54 carried by the shi-p andthis drum is preferably constructed so that a certain freedom of'movement'aboutits driving shaft is permitted;

this winch being more particularly described in my eo-.pending`application entitled Tor- .ed'o and mine guard for vessels, filed July5th, '19717, Serial No. '17 8,637 In this manner a ,resilient movementbetween each arm and thesupporting cables, or the winch to which theyare attached, is permitted. This is of great importance when the ship isat sea, particularly during rough weather as the sea encountered and therolling of the ship necessitates a certain freedom of movement of thesupporting arms. A structure too rigid would under such conditions breakor bev carried away while the resilient mounting hereshown takes care ofsuch stresses, thereby saving the supporting structure againstdestruction.

In operation with ythe guards lowered into guarding-position as shown inFig. 1, if it desiredto. raise and nest the same against the vesselsside, it is first necessary to pay out on the cables 21 to perm-it the.main cable 16 to 'be lowered into the position shown at 16e. The winch`carrying thepeables 26 may then be started to partly raise the arms 5about` their inner pivotal connections and a pull may also be exertedsupporting shelf 15. A continued movement may then be imparted throughthe screwshafts 10 until the traveling heads reach their innermostpositions. Each guard will during said movement drop into the trough orshelf 15 and the arms may in this .position be swung completely upagainst the side of the vessel aszshownA in Fig. 2.

The several movements described take place partly in unison and partlyindependent of each other.

By referring to Fig. 5v it willl. be seen that a horizontalcross-section of a guard; mem.- ber shows a stream-'line shape. This `isnec-V essary to reduce resistancetozthe.smallest degree possible whenthe guards are .extended to guard-ing position, and `it isalso ofadvantage when the guards are nested against the side of the vessel, asshown in Fig. 5. The spaces indicated at 30 betweenueach guard sectionwhen nested are preferably covered with a filling plate 51 having anexterior contour conforming` to the streainline shape of the guards, inthis4 manner preventing water fromentering between the guards andexerting a destructive action when in a heavy sea. p similar to the sideof thev vesseltis presented when the guards. are nested, and as eachguard may serve as a freight carrier, it can readily' be seen that thefreighting capacity of the vesseli's ratherinereased while change in thespeed of the vessel will hardly be noticed.

The provision ofthe traveling heads 9 and the position ofi-.thesupportingshelf 15 is an.- other important feature as it perm-its eachguard member to be nested snugly against the side of the vessel withoutraising the same appreciably above thewater level.'

A modification of the structure shown in i Figs. 1 and 2 is shown inFigs. 6 and 7 The arms 5 employed, are in this instance constructed oftwo telescopingl sections 40 and` lil.` The outer sectionnserves as anut and is extended or retracted by a gearing mechanism generally7indicated at 42, practically identical to the mechanism shown in Figs. land 2. The arm section l1 really serves thefunction of the travellinghead 9 previouslj.v described,but its movement is limited. That is, itcannot possibly be retracted to a position as close to the pivotalconnection of the arm as the other structure shown. `The movement .ofthe.guard from extended guarde ing position to .the nested position shownin Fig. 7 therefore necessitates lifting each Practicazllfal smooth:exterior guard a comparatively greater distance and lgher out of thewater to place it in the Y supporting shelf shown. By referring to theguard shown in Figs 6 and 7 it will be seen that the lower part of thechamber formed is iilled with concrete or other ballasting material,which can be permanently secured therein. This ballasting material isplaced therein for the purpose of counteracting any downward thrust ortilting action imparted while the guards are submerged; the ballastbeing heavierin the rear end than in the front of the guard tends tocounterbalance or offset any tilting thrust imparted.

The guard shown in Figs. 6 and 7 when raised is preferably swung in aninward direction by means of a pair of cables 50. These cables areattached to each end of the caisson, as shown at 51. The cables thenpass over shives 52 then up over a pair of shives 53 and from this pointpass over a drum carried by the winch 54. A pull exerted on the cables26 and 50 causes the arms to be raised, and also the lower end of thecaisson to be swung inward into a position where it may be droppeddirectly into the trough-shaped supporting shelf; both sets of cablesbeing relied on to lift the caisson, and the arms when it is swung intonesting position.

The cables 50 may also be attached to the preferred form of thestructure shown in the remaining figures of the drawings, but it is inthis instance only illustrated in connection with the modification.

Having thus described my invention what Y I claim and desire to secureby Letters Patent isl. A torpedo guard comprising a guard member, meanson a vessel for raising and lowering said guardmember and a supportingshelf comprising a trough secured to the vessel adapted to engage aportion of the guard member and means for forcing the engaging portionof said guard member into -said trough Yand holding the same therein.

2. A torpedo guard comprising a guard member, means on a vessel forraising and ,lowering said guard member, a supporting shelf secured tothe vessel having a trough formed therein adapted to engage the lowerend of the guard member and support the same and means engaging theguard member to hold the samepositively against displacement fromsaidtrough.

3. A torpedo guard comprising a pair of arms pivotally mounted on avessels side, a screw shaft journaled in each arm, a guide on each arm,(a traveling head slidably mounted in eachV guide through which thescrew shafts pass, means for revolving said shafts to move the travelingheads in Vand out on the arms, and a guard member carried by andpivotally mounted between the traveling heads. i

4. A torpedo guard comprising a pair of arms pivotally mounted on avessels side, a screw shaft journaled in each arm, a guide on each arm,a traveling head slidably mounted in each guideV through which the screwshafts pass, means for revolving said shafts Vto move the travelingheads in and out on the arms, a guard member carried by and pivotallymounted between the traveling heads, a trough shaped supporting shelfsecured to the side of the vessel, means for raising the arms up againstthe side of the vessel, to raise the guard up into the trough, and meansattached to the lower end of the guard to swing the end into the troughwhile itis being raised.

5. A torpedo guard comprising a pair of arms pivotally mounted on avessels side, a screw shaft journaled in each arm, a guide on each arm,a traveling headV slidably mounted in each guide through .which thescrew shafts pass, a shaft extending through each pivot connection, apair of intermeshing worm gears connecting said shafts and the screwshafts, a shaft journaled on the vessels side provided with means forturning same, gears connecting said shafts with the shaft passingthrough the pivot connections to permit turning movement to betransmitted to the screw shafts, a guard member carried by and pivotallymounted between the traveling heads, means for raising and lowering thearms in unison to swing the guards into guarding position, or againstthe vessels side, a trough shaped supporting shelf adapted to receivethe lower end of the guard when swung in against the'side, and means'forsecuring the guard against removal from the trough.

6. A torpedo guard comprising a pair of arms pivotally mounted on avessels side, a screw shaft journaled in each arm, a guide on each arm,a traveling head slidably mounted in each guide through which the screwshafts pass, a shaft extending through each pivot connection, a pair ofintermeshing worm gears connecting said shafts and the screw shafts, ashaft journaled on the vessels side provided with means for turn ingsame, gears connecting said shafts with the shaft passing through thepivot con nections to permit turning movement to be transmitted to thescrew shafts, a guard member carried by and pivotally mounted betweenthe traveling heads, means for raising and` lowering the arms in unisonto swing the guards into guarding position, or against the vessels side,a trough shaped supporting shelf adapted to receive the lower end of theguard when swung in against the side, means for securing the guardagainst removal from the trough, said means also adapted to ewngthelower end In testimony whereof I have hereunto set withln the troughWhlle belng rinsed by the `my hand 1n Ythe presence o'tWo subsemblngarms, means for llmltmg the outward sWlng- Wltnesses.

ing movement of the guard when extended JOHN F. NEWSOM. and lowered toguarding position, and :t Witnesses: resilient Winding member to whichsaid J oHN H. HERRING.,

means is secured. JOHN B. NEWsoM,

envien ot this;` patent may be obtained for fwe cents each, byaddressing-the. Commissioner of Raums;

Washngtomll. t

